Process and apparatus in and relating to the manufacture and production of artificial threads, filaments, and the like



' E. A. MORTON PROCESS AND APPARATUS IN AND RELATING Nov. 1, 1932. 1,885,753

TO THE MANUFACTURE AND PRODUCTION OF ARTIFICIAL THREADS, FILAMENTS, AND THE LIKE Filed Feb. 15, 1929 INVENTOR ERIC ANDREW MORTON filaments and the like Patented Nov. 1, 1932 ERIC ANDREW MORTON, OF COVENTRY, ENGLAND,EASSIG1\IOR T COURTAULDS LIMITED,

OF LONDON, ENGLAND,

PROCESS AND APPARATUS IN AND RELATINsTo THE A BRITISH COMPANY ivrANu'rAcruan 7 AND PRODUC- 'TION OF'ARITIFICIAL THREADS, FILAMENTS, AND THE LIKE Application filed February 15, 1929, Serial No.

of artificial threads, by the box spinning process, it is usual to pass the thread after leaving the spinning bath into 'a rapidly rotated box, the thread coiling itself against the wall of the said box, forming an annular ring or cake, hereinafter referred to as a cake. It has already been proposed to wash the cake while it is still in the centrifugal apparatus in which the thread is collected, or in another centrifugal apparatus into which In the manufacture the cake has been transferred, During such washing process, the water is introduced into the centre of the box preferably in the form of spray, various types of spraying nozzles or other spraying devices being employed and in which the said spraying nozzle or 7 other spraying devices may or may not rotate so p with the box. A

I have found that the treatment of a cake with liquid, for example, the washing of the cake in order to remove rapidly the whole of the harmful impurities, can be effected very advantageously by projecting a jet of the required liquid more or less vertically downward on to a suitable device situated atthe centre of the bottom of the box, which is adapted to cause the jet of liquid to break up into spray, which reaches and permeates all parts of the said cake. A device according to this invention which has been found very suitable for converting the jet of liquid into a spray which will reach and permeate all parts of the cake, consists of a circular disc of which the centre part on to which the jet of liquid impinges,is

. domed, while the outer part is provided with v A alternate ridges and hollows.

This disc is fixed in the box so that they are rotated together, and, during such rotation, the jet of liquid, for example water, is broken up into spray and the spray so directed that all parts of the cake are thoroughly treated. For example, when using this apparatus it is possible to wash all the spinning bathacid from a cake of viscose silk within a few minutes, and the cake can then be dried in an oven without any deterioration of the silk taking lace.

I will further describe" a method of car- -zle C is preferably 340,080, and in Great Britain April 10, 1928.

rying this invention into effect referring to the accompanying drawing which illustrates in section an example of apparatus according to this invention, but the invention is not restricted thereto. A represents the box whose side walls are perforated, as usual, and B represents the cake of fibre, G is the nozzle through which a stream D of water or other liquid is projected vertically downwards on to the device fixed at the centre of the bottom of the box. In this device, E represents the domed central the radial ridges surrounding the domed portion E, the outer ends of the hollows between the said radial ridges FF being lower than the inner ends of the said hollows. The nozprovided with a ball-andsocket arrangement, so that the direction of the jet of water can be varied suflicientlyto ensure that the said jet impinges upon the domed central portion E of the disc.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is 1. Apparatus for treating a "cake of fibre duringthe manufacture and production of artificial threads, filaments and the like, com

prising a centrifugal box with perforated walls and containing at the centre of the bottom of the box a circular disc, of which the center part is domed, while the outer part is provided with alternate ridges and hollows.

2. A process for treating an annular cake of fibre in a rapidly rotating box consisting in projecting a jet of liquid more or less vertically downwardly Within the cake, breaking up said jet of liquid into a spray, and throwing said spray onto the interior walls of the cake to' permeate all parts of the cake.

3. A process for treating an annular cake of fibre by rotating it rapidly about its vertical axis and projecting a jet of liquid more or less vertically downward into the cake and causing the jet to breakup into spray, which reaches and said cake. g

4. Apparatus for treating a cake of fibre during the manufacture andp-roduction of permeates all parts of the artificial threads, filaments and the like, com

prising a centrifugal box with perforated walls, a circular disk at the center of the bottom of the box, said disk having its center part domed and the outer part provided with alternate ridges and holes, and means for projecting a jet of fluid substantially vertically downwardly onto said dome-shaped portion.

'- In testimony whereof I have signed my name to this specification. t I

ERIC/ANDREW MORTON. 

